Process of treating marble



F. HARGET PROCESS OF TREATING MARBLE Filed July 16. 1926 Patented Jan.4, 1927.

PATENT OFFICE.

FREDERICK HARGET, OF TOLEDO, OI-II O.

PROCESS OF TREATING MARBLE.

Application filed July 16, 1926. Serial No. 122,793.

My invention relates to a process of treat ing marble or other similarsubstances, and an object of this invention is to produce an ornamentalsurface simulating brick in appearance.

The invention is shown by way of illustration in the accompanyingdrawings, in which:

The figure is a plan view of a marble slab showing one manner in whichthe appearance may be transformed into a simulated brick structure.

In accordance with my invention, I take a slab of marble A of thedesired dimensions and polish this slab in such a manner as to obtain aglossy lustrous surface. erably the slab is of reddish color so as moreclosely to approach the general appearance of brick. After the slab hasbeen polished to a suitable degree of glossiness, and with the side of astraight edge ruler B, l abrade the surface with a piece of carborundumC along crossing rectangular lines 1) of approximately the conformationof brick blocks. By so doing, white lines are left on the polishedsurface of the marble, and in operation no perceptible grooves appear onthe surface of the marble, but merely sullicient abrading to destroy thepolish at those places.

Yvhile I have shown and described a method of treating marble by hand, Ido not desire to be limited solely to the use of manual means foreffecting the result, because a simple machine may readily accomplishthe purpose, especially when this method is to be carried out on aproduction basis.

It is well known that patterns of different designs have been formedinthe face of a polished marble slab by means of chiseling,

Prefbut this is decidedly impracticable for the purpose, because of thedifliculty in drawing straight lines and because a metallic tool chipsor breaks away particles of the marble, thereby materially detractingfrom the de- 45 sired neat appearance.

Marble treated in the manner heretofore described is admirably adaptedfor interior decorating, as for. example in the case of fire placeconstruction where the rough and unfinished appearance of brick is notdesired, although the general effect of brick blocks is suitable.Numerous uses and advantages of this construction will be readilyapparent to those skilled in this art. 65

While I have shown and described a construction which admirably fulfillsthe object heretofore specified, itis to be understood that the above isgiven by Way of illustration and not of limitation, and numerous changesin details of construction and choice of materials may be effectedwithout departing from the spirit of the invention as defined in theappended claims.

- What I claim as new and desire to secure by Letter Patent is: i

l. The process of treating marble which consists in polishing thesurface of the marble, and thereafter abrading the polished surfacealong crossing rectangular lines to simulate brick in appearance.

2. The process of treating marble which consists in polishing thesurface of the marble, and thereafter abrading the polished surface by apiece of carborundum, along 7 crossing rectangular lines to simulatebrick in appearance. 7

In testimony whereof I have hereunto signed my name to thisspecification.

FREDERICK HARGET.

